Finding the Fourth Proportional to 12,008.18, 16,555.88 and 9,846.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,008.18 : 16,555.88 = 9,846.77 : x
2. Step 2: Convert to fraction form
   12,008.18/16,555.88 = 9,846.77/x
3. Step 3: Cross multiply
   12,008.18x = 16,555.88 × 9,846.77
4. Step 4: Simplify right side
   12,008.18x = 163,021,870.50
5. Step 5: Solve for x
   x = 163,021,870.50/12,008.18
6. Step 6: Final answer
   x = 13,575.90